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Résoudre :
⦁ x+5=1
⦁ x+5=-1
⦁ x-4=-2
⦁ x-4=2
⦁ 5x=2x+1
⦁ 3x=2x-6
⦁ 2x+10=x-2
⦁ 5x-8=3x+2
⦁ 4x+14=2x+4
⦁ x-10=-3x
⦁ 3,2x+4,5=0,5x-1
⦁ -4+(2/3)x=-x+2
⦁ 4(x-1)=1
⦁ 3(2+x) = 2
⦁ 3(2x+1)=5x+7
Svpp aidez moi

Sagot :

PAUMEDEREINAITE

Réponse:

Bonjour

Explications étape par étape:

1) x + 5 = 1

x = - 4

2) x + 5 = - 1

x = - 6

3) x - 4= - 2

x = 2

4) x - 4 = 2

x = 6

5) 5x = 2x + 1

3x = 1

X = 1/3

6) 3x = 2x-6

x = - 6

7) 2x + 10 = x - 2

X = - 12

8) 5x-8=3x+2

2x = 10

X = 5

9) 4x + 14 = 2x +4

2x = -10

x = - 5

10) x - 10 = - 3x

4x = 10

X = 2.5

11)3.2x + 4.5 = 0,5x - 1

2.7x = - 5,5

X = - 5,5/2.7

12) - 4+(2/3)x = - x + 2

(5/3)x = 6

X = 18/5

13) 4(x-1)=1

4x - 1 = 1

4x = 2

X = 0,5

14) 3(2+x)= 2

6+ 3x = 2

3x = - 4

X = - 4/3

15) 3(2x + 1) = 5x + 7

6x + 3 = 5x + 7

X = 4

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